WO2003092336A1 - Dispositif, systeme et procede d'acquisition d'etat de fonctionnement d'un tube a rayons x - Google Patents
Dispositif, systeme et procede d'acquisition d'etat de fonctionnement d'un tube a rayons x Download PDFInfo
- Publication number
- WO2003092336A1 WO2003092336A1 PCT/JP2003/005249 JP0305249W WO03092336A1 WO 2003092336 A1 WO2003092336 A1 WO 2003092336A1 JP 0305249 W JP0305249 W JP 0305249W WO 03092336 A1 WO03092336 A1 WO 03092336A1
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- WIPO (PCT)
- Prior art keywords
- ray tube
- tube
- target
- ray
- operation information
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
Definitions
- X-ray tube operation state acquisition device X-ray tube operation state acquisition system
- X-ray tube operation state acquisition method X-ray tube operation state acquisition method
- the present invention relates to an X-ray tube operation state acquisition device, an X-ray tube operation state acquisition system, and an X-ray tube operation state acquisition method.
- the X-ray tube manufacturer or maintenance company shall detect the cause of the X-ray tube failure, that is, detect the wear or abnormal operation of the X-ray tube parts and replace or repair the X-ray tube parts. Is required. Conventionally, judgment of the degree of wear of parts or detection of occurrence of abnormal operation has been performed manually.
- the present invention has been made in order to solve the above problems, and has an X-ray tube operation state acquisition device, an X-ray tube operation state acquisition system, and an X-ray tube operation state acquisition system capable of detecting the cause of a failure of an X-ray tube with little effort.
- An object of the present invention is to provide an X-ray tube operation state acquisition method.
- an X-ray tube operation state acquisition device of the present invention includes operation information on the operation state of the X-ray tube transmitted from an X-ray tube measurement device that measures the operation state of the X-ray tube.
- an X-ray tube operation state acquisition method of the present invention Means for receiving, via a communication line, operation information on the operation state of the X-ray tube transmitted from the X-ray tube measuring device for measuring the operation state of the X-ray tube; and And a storage step for storing the operation information received by the receiving means.
- the receiving means acquires the operation information on the operation state of the X-ray tube measured by the X-ray tube measuring device via the communication line, and the storage means stores the operation information.
- the cause of X-ray tube failure can be detected without checking the X-ray tube. As a result, the cause of the X-ray tube failure can be detected with less effort.
- the operation information includes a filament energizing time.
- the filament deteriorates according to the energizing time. Since the operation information includes the filament energizing time, the deterioration of the filament can be detected from the integration of the filament energizing time.
- the operation information may be a tube current flowing through the target when a predetermined tube voltage is applied to a target of the X-ray tube. It is preferable to include the height of the grid voltage applied to the grid electrode so that the value of .gamma. Is kept constant.
- the grid voltage When the filament deteriorates, the grid voltage must be increased in order to maintain a constant tube current value when a predetermined tube voltage is applied. Filament degradation can be detected from the value of the Darlid voltage included in the operation information.
- the operation information includes an X-ray irradiation time.
- the target deteriorates according to the X-ray irradiation time. Since the operation information includes the X-ray irradiation time, the deterioration of the target can be detected from the integration of the X-ray irradiation time.
- the operation information may be obtained by applying a predetermined tube voltage to a target of the X-ray tube and a predetermined tube current. It is preferable to include the intensity of X-rays generated when thermal electrons collide with the target while flowing through the target.
- the intensity of X-rays generated under certain tube voltage and tube current values is reduced. Deterioration of the target can be detected from the X-ray intensity included in the motion information.
- the X-ray tube operation state acquiring device of the present invention further includes a wear degree determining unit that determines a wear degree of a component configuring the X-ray tube based on the operation information.
- the method of acquiring an X-ray tube operation state according to the present invention preferably includes a wear degree determination step in which the wear degree determination unit determines the wear degree of a component constituting the X-ray tube based on the operation information. It is.
- the wear degree determining means determines the wear degree of the components constituting the X-ray tube based on the operation information, the labor for analyzing the operation information can be saved.
- the X-ray tube operation state acquisition device of the present invention further includes a determination result notification unit that notifies the information communication terminal of the determination result by the wear degree determination unit via a communication line.
- the X-ray tube operation state obtaining method of the present invention includes a judgment result notifying step in which the judgment result notifying means notifies the information communication terminal of the judgment result by the wear degree judging means via a communication line. Is preferred.
- judgment result notifying means notifies the information communication terminal of the judgment result by the wear degree judging means to the information communication terminal via the communication line, it is necessary to prepare the user for component replacement without any labor. I can let you know.
- the X-ray tube operation state acquisition device of the present invention includes an abnormal operation detecting means for detecting an abnormal operation of the X-ray tube based on the operation information.
- the abnormal operation detecting means includes an abnormal operation detecting step of detecting an abnormal operation of the X-ray tube based on the operation information. Since the abnormal operation detecting means determines the abnormal operation of the X-ray tube based on the operation information, it is possible to save labor for analyzing the operation information.
- the X-ray tube operating state acquisition device is characterized in that the operation information is such that a predetermined tube voltage is applied to a target of the X-ray tube and a predetermined tube current flows to the target.
- the abnormal operation detecting means detects occurrence of a discharge phenomenon in the X-ray tube based on the intensity of the X-rays. It is suitable.
- the operation information may be obtained in a state where a predetermined tube voltage is applied to a target of the X-ray tube and a predetermined tube current flows to the target.
- the abnormal operation detection means detects the occurrence of a discharge phenomenon in the X-ray tube based on the intensity of the X-rays, the intensity including X-rays generated by the collision of the thermoelectrons with the target of the tube. It is preferred that
- the X-ray tube operation state acquisition device of the present invention further includes a detection result notifying unit that notifies the information communication terminal of the detection result by the abnormal operation detecting unit via a communication line.
- the X-ray tube operation state obtaining method of the present invention includes a detection result notifying step in which the detection result notifying means notifies an information communication terminal of the detection result by the abnormal operation detecting means via a communication line.
- the detection result notifying means notifies an information communication terminal of the detection result by the abnormal operation detecting means via a communication line.
- the detection result notifying means notifies the information communication terminal of the detection result by the abnormal operation detecting means via the communication line, it is possible to notify the user of the occurrence of the abnormal operation without any labor.
- the X-ray tube operation state acquisition device may further include the operation information stored in the storage unit. It is preferable to have a presentation means for presenting the information on a display.
- the X-ray tube operation state obtaining method of the present invention includes a presentation step in which the presentation unit presents the operation information stored in the storage unit on a display.
- the maintenance staff can easily collect information on the usage state of the X-ray tube.
- an X-ray tube operation state acquisition system of the present invention is an X-ray tube operation state acquisition system for managing the operation of an X-ray tube, wherein the measurement for measuring the operation state of the X-ray tube is performed.
- An X-ray tube measuring device, and the X-ray tube operation state acquisition device according to any one of claims 1 to 17, wherein the X-ray tube operation state acquisition device receives the X-ray tube, Receiving the operation information transmitted by the transmission unit of the measurement device, the storage unit of the X-ray tube operation state acquisition device stores the operation information received by the reception unit of the X-ray tube operation state acquisition device It is characterized by the following.
- another aspect of the X-ray tube operation state acquisition device of the present invention is to acquire operation information on the operation state of an X-ray tube including a filament that emits thermoelectrons when energized.
- An X-ray tube operation information acquisition device which is output from an X-ray tube measurement device that measures an operation state of the X-ray tube, and at least a filament energizing time and a predetermined tube voltage are applied to a target of the X-ray tube.
- Input means for inputting operation information of the X-ray tube including a value of a grid voltage applied to a dalid electrode such that a value of a tube current flowing through the target is maintained constant in a closed state; and
- a wear rate determining unit configured to determine a wear rate of the filament based on a current supply time and the grid voltage value.
- Another aspect of the X-ray tube operating state acquisition method of the present invention is to acquire operation information on the operating state of an X-ray tube having a filament that emits thermoelectrons when energized.
- An X-ray tube operation information acquisition method comprising: outputting from an X-ray tube measuring device for measuring an operation state of the X-ray tube, wherein at least a filament energizing time and a predetermined tube voltage are applied to a target of the X-ray tube.
- the degree of filament consumption can be determined from the filament energizing time included in the operation information. Further, it is possible to more accurately determine that the filament has been consumed from the grid voltage value included in the operation information. Therefore, it is possible to detect that the filament has been consumed with little effort.
- still another aspect of the X-ray tube operation state acquisition device of the present invention is an X-ray tube operation information acquisition device for acquiring operation information relating to an operation state of an X-ray tube
- An X-ray tube measuring device that measures the operation state of the X-ray tube outputs at least an X-ray irradiation time, a predetermined tube voltage is applied to a target of the X-ray tube, and a predetermined tube current is applied to the target.
- Input means for inputting operation information of the X-ray tube including the intensity of X-rays generated by the collision of thermal electrons with the target in a flowing state; and the X-ray irradiation time and the X-ray intensity
- a wear degree determining means for determining a wear degree of the target based on the wear degree.
- Still another aspect of the X-ray tube operation state acquisition method of the present invention is an X-ray tube operation information acquisition method for acquiring operation information on an X-ray tube operation state, wherein the X-ray tube operation state is Output from the X-ray tube measuring device for measuring the X-ray tube, at least an X-ray irradiation time and a predetermined tube voltage are applied to the target of the X-ray tube, and the target is set in a state where a predetermined tube current flows to the target.
- a first step of obtaining operation information of the X-ray tube including the intensity of X-rays generated by colliding thermal electrons with the X-ray tube, and based on the X-ray irradiation time and the X-ray intensity. Determine the wear level of the target And a second step of disconnecting.
- the degree of target wear can be determined from the X-ray irradiation time included in the operation information. Furthermore, it is possible to more accurately determine that the target has been consumed from the intensity of the X-rays included in the motion information. Therefore, it is possible to detect that the target has been consumed with little effort.
- FIG. 1 is a schematic diagram (cross-sectional view) showing the structure of the X-ray tube 1.
- FIG. 2 is a diagram illustrating a functional configuration of the X-ray tube operation state acquisition system according to the first embodiment.
- FIG. 3 is a diagram showing the contents of the file 321 relating to the determination of the degree of consumption of the filament of the X-ray tube 1 included in the operation information.
- FIG. 4 is a diagram showing the contents of the file 322 relating to the correspondence between the G1 voltage value (initial value) of the X-ray tube 1 and the tube current value stored in the storage section 320 in advance.
- FIG. 5 is a diagram showing the contents of the file 3 2 3 relating to the X-ray irradiation time of the X-ray tube 1 included in the operation information.
- FIG. 6 is a diagram showing the contents of the file 324 relating to the temporal change of the tube voltage value and the tube current value included in the operation information.
- FIG. 7 is a diagram showing the contents of the file 325 relating to the correspondence between the tube voltage value of the X-ray tube 1 ⁇ the tube current value and the X-ray dose (initial value) stored in advance in the storage section 320.
- Figure 8 shows the files related to the tube voltage, tube current and X-ray dose included in the operation information.
- FIG. 3 is a diagram showing the contents of 326.
- FIG. 9 is a diagram illustrating a functional configuration of the X-ray tube operation state acquisition system according to the second embodiment. '
- FIG. 10A is a graph showing the filament energizing time.
- FIG. 10B is a graph showing the X-ray irradiation time.
- FIG. 10C is a graph showing a change in the G1 voltage value.
- FIG. 10D is a graph showing a change in X-ray dose (X-ray intensity).
- FIG. 1 is a schematic diagram (cross-sectional view) showing the structure of the X-ray tube 1.
- the X-ray tube 1 is sealed by a shell formed by a metal envelope 11, a stem 12 and a beryllium window 13.
- the X-ray tube 1 includes a vacuum pump 14, and the gas inside the outer shell is exhausted by the vacuum pump 14 before the X-ray tube 1 is operated.
- the X-ray tube 1 is a sealed type, the inside of the outer shell is previously sealed with a vacuum.
- the X-ray tube 1 has a filament 110 that emits thermoelectrons when energized inside the outer shell, a first grid electrode 120 that pushes the thermoelectrons back to the filament side, and a filament 110 that pulls the thermoelectrons to the target side. 2 It has a dalid electrode 130, an electromagnetic lens 140 for focusing a beam of thermoelectrons, and a tungsten target 150 for generating X-rays by collision of the thermoelectrons. From the filament 110 toward the target 150, the first grid electrode 120, the second grid electrode 130, and the electromagnetic lens 140 are arranged in this order, and the first grid electrode 120 and the second grid electrode 120 are arranged in this order. Each of the grid electrodes 130 has an opening 120a and an opening 130a at the center thereof for allowing thermoelectrons to pass.
- the X-ray tube 1 includes a power supply 15 including a high voltage generation circuit for applying a positive high voltage to the target 150.
- the X-ray tube 1 is connected to an X-ray tube controller 2 to be described later by a control cable 16 and is controlled by the X-ray tube controller 2.
- each part of the X-ray tube 1 is energized, and the X-ray tube 1 starts operating.
- the filament 110 emits thermionic electrons when a predetermined voltage is applied and energized.
- the X-ray tube 1 starts warming up, and the voltage (tube voltage) applied to the target 150 gradually increases until the tube voltage reaches the set value. Further, the voltage applied to the first da- lid electrode 120 is adjusted so that the current (tube current) flowing through the target 150 becomes a set tube current value.
- a negative voltage (cut-off voltage) is applied to the first grid voltage 110, and the X-ray tube 1 enters an X-ray irradiation standby state.
- the thermoelectrons emitted from the filament 110 are pulled by the second grid electrode 130 having a higher potential than the filament 110, but at the same time, the cutoff voltage is applied to the first grid electrode 120. Is applied, so that it is pressed so as not to pass through the opening 120 a of the first dalid electrode 120.
- thermoelectrons When the X-ray irradiation switch 22 of the X-ray tube controller 2 is turned on, the voltage value of the first Darried electrode 120 increases, and thermoelectrons are pulled by the second Darried electrode 130. It passes through the opening 120 a of the first grid electrode 120. Further, the thermoelectrons pass through the opening 130a of the second grid electrode 130 while being accelerated by the tube voltage applied to the target 150.
- the opening 120a and the opening 130a are adjusted. The amount of thermoelectrons that pass through can be increased or decreased. That is, the intensity of the tube current can be increased or decreased by adjusting the height of the G1 voltage.
- the target 150 When the beam of thermionic electrons focused by the electromagnetic lens 140 hits the target 150, the target 150 generates X-rays. X-rays pass through the beryllium window 130 and exit to the outside of the X-ray tube 1. The intensity of the X-rays generated by the target 150 is determined by the intensity of the tube voltage and the intensity of the tube current.
- the X-ray tube managed by the X-ray tube operation status acquisition system of the first embodiment is: It may be a sealed type or an open type.
- the X-ray tube 1 emits thermoelectrons when the filament is energized, but the X-ray tube has an indirectly heated thermoelectron generator that emits thermoelectrons when the cathode is heated by the heater. There may be.
- FIG. 2 is a diagram illustrating a functional configuration of the X-ray tube operation state acquisition system according to the first embodiment. As shown in FIG.
- the X-ray tube operation state acquisition system includes an X-ray tube controller 2 (X-ray tube measurement device) and an X-ray tube operation state acquisition device 3.
- the X-ray tube controller 2 is installed under the user of the X-ray tube 1.
- the X-ray tube controller 2 controls the X-ray tube 1, measures the operation state of the X-ray tube 1, and transmits the X-ray tube 1 to the X-ray tube operation state acquisition device 3 via a communication line. It has a function of transmitting operation information on the operation state.
- An information communication terminal 4 is installed under the user of the X-ray tube 1, and the information communication terminal 4 acquires the notification information transmitted from the X-ray tube operation status acquisition device 3 via the communication line. It has the function of presenting to the user.
- the X-ray tube operation status acquisition device 3 is installed under the maintenance management company of the X-ray tube 1 and has a function of managing the X-ray tube 1 via a communication line.
- the X-ray tube controller 2 is connected to the X-ray tube 1 by a control cable 16.
- the X-ray tube controller 2 has a power switch 21 for switching the operation and stop of the X-ray tube 1, an X-ray irradiation switch 22 for switching between X-ray irradiation and standby while the X-ray tube 1 is operating, and a control of the tube voltage.
- each part of the X-ray tube 1 is energized, and the X-ray tube 1 starts warming up.
- the X-ray irradiation switch 22 is turned on during X-ray irradiation standby, the voltage of the first grid electrode switches from the cut-off voltage value to the G1 voltage value, so that the tube current flows and the target 150 X-ray Let it live.
- the up button and the down button of the tube voltage adjuster 23 By operating the up button and the down button of the tube voltage adjuster 23, the set tube voltage of the X-ray tube 1 can be adjusted. Similarly, the set tube current of the X-ray tube 1 can be adjusted by operating the up button and the down button of the tube current adjustment unit 24.
- the measuring unit 220 measures the operation state of the X-ray tube 1 and obtains operation information on the operation state of the X-ray tube 1. The contents of the operation information will be described later in the operation of the x ⁇ tube operation state acquisition system of the first embodiment.
- the measurement unit 220 includes an X-ray monitor 221 having a function of measuring the intensity of the irradiated X-rays in the operation state of the X-ray tube 1.
- the X-ray monitor 221 is connected to the X-ray tube controller body by a cable, and is installed in the X-ray irradiation area of the X-ray tube 1.
- the operation information obtained by the measuring unit 220 is stored in the memory 230.
- Communication section 210 is memory 23
- the operation information stored in “0” is transmitted to the X-ray tube operation state acquisition device 3 via a communication line when the operation of the X-ray tube ends or at regular intervals.
- the X-ray tube operation state acquisition device 3 includes a communication unit 310 (transmission means, reception means, and input means), a storage unit 320 (storage means), and a wear degree determination unit 330 (wear degree determination means).
- An abnormal operation detecting section 340 abnormal operation detecting means
- a notifying section 350 determination result notifying means, detection result notifying means
- a presentation section 360 presentation means
- the communication unit 310 receives the operation information transmitted from the X-ray tube controller 2 via the communication line.
- the storage unit 320 stores the operation information received by the communication unit 310.
- the degree of wear ⁇ U disconnection section 330 determines the degree of wear of filament 110 of X-ray tube 1 and target 150 based on the operation information stored in storage section 320.
- the abnormal operation detection unit 340 detects a discharge phenomenon in the X-ray tube 1 based on the operation information stored in the storage unit 320.
- the notification unit 350 notifies the information communication terminal 4 of the determination result of the wear degree determination unit 330 and the detection result of the abnormal operation detection unit 3400 via the communication line.
- the presentation unit 360 presents the operation information stored in the storage unit 320 to the display.
- FIG. 3 is a diagram showing the contents of the file 321 relating to the determination of the degree of consumption of the filament 110 included in the operation information.
- the file 3 21 includes an operation start date and time field, an operation end date and time field, a filament energization time field, an X-ray irradiation time field, and a G1 voltage value field.
- the power switch 21 of the X-Izumi tube controller 2 When the power switch 21 of the X-Izumi tube controller 2 is turned on, a predetermined voltage is applied to the filament 110.
- the measuring unit 220 counts the time (filament energizing time) since the power switch 21 was turned on.
- Operation start date and time time when power switch 21 was turned on
- operation end date and time time when power switch 21 was turned off
- filament energization time time when power switch 21 was turned off
- X-ray irradiation time time when power switch 21 was turned off
- X-ray irradiation ended The G 1 voltage value at that time is recorded in the file 321 stored in the memory 230 respectively.
- the file 3 21 is transmitted to the X-ray tube operation state acquisition device 3 when the operation of the X-ray tube 1 is completed.
- the communication unit 310 of the X-ray tube operation status acquisition device 3 receives the file 321, the file 3221 stored in the storage unit 3200 is updated.
- the wear degree determining section 330 accumulates the filament energizing time with reference to the file 3221.
- the storage unit 320 stores the initial value of the consumption level (thermionic emission amount (tube current value at a predetermined G1 voltage)) corresponding to the accumulated energization time of the filament 110 (the filament 110 is used first).
- the consumption rate determination unit 330 refers to this database to determine the consumption rate of the filament 110 based on the cumulative energizing time by referring to this database. Judge. At this time, the consumption degree determination unit 330 may determine the consumption degree of the filament 110 by considering the integration of the X-ray irradiation time recorded in the file 3221.
- the notifying section 350 is provided when the degree of consumption of the filament 110 determined by the degree of consumption determining section 330 reaches a predetermined value (for example, integration of filament energizing time: 100 0 0 hours, the consumption of filament 110: 80%), informs the information communication terminal 4 of the consumption of filament 110, and replaces the filament (X-ray tube head in the case of sealed type). Send a notification that prompts you to prepare.
- a predetermined value for example, integration of filament energizing time: 100 0 0 hours, the consumption of filament 110: 80%
- the presenting unit 360 has a display, and presents the file 321 on the display.
- the X-ray tube operation state acquisition device 3 can detect the deterioration of the filament 110 from the integration of the filament energizing time. As a result, the cause of the failure of the X-ray tube 1 (deterioration of the filament 110) can be detected without requiring maintenance personnel.
- the information communication terminal 4 receives the notification transmitted by the notification unit 350, so that the maintenance staff can use no labor and the filament 110 can be transmitted to the user before the filament 110 reaches its end of life. Notifying the deterioration of 0 and prompting the preparation for replacement of the filament (X-ray tube head in case of sealed type). By presenting the operation information on the display, the maintenance staff can obtain information on the usage state of the X-ray tube 1.
- the filament consumption rate per filament energizing time differs between when the X-rays are irradiated and when the X-rays are not irradiated. It is possible to judge the degree of consumption of the filament in consideration of the integration of the X-ray irradiation time recorded in the X-ray irradiation time field.
- FIG. 4 is a diagram showing the contents of the file 322 relating to the correspondence between the G1 voltage value (initial value) of the X-ray tube 1 and the tube current value stored in the storage section 320 in advance.
- file 3 222 is composed of a G1 voltage value field and a tube current value field.
- G 1 voltage value field contains the tube current value field
- the G1 voltage value (initial value) for realizing the tube current value is described.
- the initial value refers to the G1 voltage value when the filament 110 is used for the first time.
- the wear level judging section 330 compares the latest G1 voltage value recorded in the file 3221 with the file 3222 to determine the G1 voltage value at the set tube current value (initial value). Calculate the rate of decrease of the absolute value of the latest G1 voltage value relative to the absolute value of
- the storage section 320 stores the degree of consumption (thermal electron emission (tube current value at a given G1 voltage)) corresponding to the rate of decrease of the absolute value of the G1 voltage with respect to the absolute value of the G1 voltage (initial value).
- the notifying section 350 outputs the G 1 voltage with respect to the absolute value of the G 1 voltage (initial value) when the degree of consumption of the filament 110 determined by the degree of wear determining section 330 reaches a predetermined value.
- the absolute value of the filament 80%
- the degree of consumption of the filament 110 80%
- the information communication terminal 4 of the degree of consumption of the filament 110 Sends a notification to prepare for replacement.
- the presentation unit 360 includes a display, and presents operation information on the display.
- the G1 voltage value adjusted to achieve the set tube current value increases. Therefore, the X-ray tube operation status acquisition device 3 compares the G1 voltage value of the operation information under the set tube current value with the G1 voltage value (initial value) to determine the filament 1 Deterioration of 10 can be detected.
- the maintenance staff can detect the cause of the failure of the X-ray tube 1 (deterioration of the filament 110) without consuming labor.
- the information communication terminal 4 receives the notification transmitted by the notification unit 350, and allows the maintenance staff to use the filament 110 without any effort by the maintenance worker before the filament 110 reaches the end of its life. Notify the deterioration and prepare to replace the filament (X-ray tube head for sealed type). Can be encouraged. Maintenance information is displayed on the display,
- the third operation of the X-ray tube operation state acquisition system according to the first embodiment (the operation in which the consumption level determination unit 330 determines the consumption level of the target 150 based on the X-ray irradiation time) and its operation The effect will be described.
- the height of the Darled voltage applied to the first Darried electrode becomes the G1 voltage value, and the tube current set in the target 150 flows. .
- the measuring unit 220 counts the time (X-ray irradiation time) since the X-ray irradiation switch 22 was turned on.
- the memory 230 stores the X-ray irradiation time counted by the measuring unit 220.
- the X-ray irradiation time stored in the memory 230 is transmitted to the X-ray tube operation state acquisition device 3 by the communication unit 210 at one-second intervals.
- the communication unit 210 transmits the date and time (X-ray irradiation start date and time) to the X-ray operation state acquisition device 3, and the X-ray irradiation switch 2 When 2 is turned off, the date and time (X-ray irradiation end date and time) is transmitted.
- FIG. 5 is a diagram showing the contents of the file 3 23 relating to the X-ray irradiation time of the X-ray tube 1 included in the operation information.
- the file 3 23 includes an X-ray irradiation start date / time field, an X-ray irradiation end date / time field, and an X-ray irradiation time field.
- the operation information is written to the corresponding field of the file 323.
- the wear level determination unit 330 accumulates the X-ray irradiation time with reference to the file 3223.
- the storage unit 320 stores the degree of wear corresponding to the integration of the X-ray irradiation time (the initial value of the X-ray dose at a predetermined tube voltage and tube current (X-ray dose when the target 150 is used for the first time)) Is stored in the database.
- the cut section 330 refers to this database to determine the degree of wear of the target 150 from the integrated X-ray irradiation time.
- the notifying unit 350 is provided when the degree of wear of the target 150 determined by the degree of wear determining unit 330 reaches a predetermined value (for example, integration of X-ray irradiation time: 500 hours, At the target 150 consumption level: 30%), the information and communication terminal 4 is notified to replace or rotate the target 150 (or the X-ray tube head in the case of the sealed type). Send.
- a predetermined value for example, integration of X-ray irradiation time: 500 hours, At the target 150 consumption level: 30%
- the information and communication terminal 4 is notified to replace or rotate the target 150 (or the X-ray tube head in the case of the sealed type).
- Send by rotating the target 150, the portion of the target 150 where the beam of thermionic electrons is moved moves.
- the presentation unit 360 includes a display, and presents the file 323 on the display.
- the X-ray tube operation state acquisition device 3 can detect the deterioration of the target 150 from the integration of the X-ray irradiation time.
- the cause of the failure of the X-ray tube 1 (deterioration of the target 150) can be detected without the maintenance staff taking the labor.
- the information communication terminal 4 receives the notification transmitted by the notification unit 350, so that maintenance personnel can use the target 150 without damage to the target 150 before the target 150 is damaged. Replacement or rotation (replacement of the X-ray tube head in the case of the sealed type) can be prompted.
- the maintenance staff can obtain information on the usage state of the X-ray tube 1.
- the fourth operation of the X-ray tube operation state acquisition system of the first embodiment (the wear degree determination unit 330 performs the target 1500 based on the time-dependent changes in the tube voltage height and the tube current intensity). The operation of determining the degree of wear of the vehicle) and its effect will be described.
- the memory 230 stores the tube voltage value and the tube current value measured by the measuring unit 220. Tube voltage value stored in memory 230 The transmission tube current value is transmitted to the X-ray tube operation state acquisition device 3 by the communication unit 210 at 1 second intervals at the same time as the transmission.
- FIG. 6 is a diagram showing the contents of the file 324 relating to the change with time of the tube voltage value and the tube current value included in the operation information.
- the file 324 includes a date and time field, a tube voltage value field, and a tube current value field.
- the transmission date and time of the operation information is described in the wording field.
- the tube voltage value and the tube current value of the operation information are described in the tube voltage value field and the tube current value field, respectively.
- the storage unit 320 stores in advance the degree of wear of the target 150 per second in a certain combination of the tube voltage value and the tube current value (the initial X-ray dose at a predetermined tube voltage value and tube current value).
- a database is described that describes the values (the percentage reduction in X-ray dose when target 150 is first used).
- the consumption level determination unit 330 refers to the above-mentioned database, extracts the tube level and the current level of the tube current value of the file 324 in each second, and integrates them to obtain the target 1505. Judge the degree of wear.
- the notification unit 350 is provided when the degree of wear of the target 150 determined by the degree of wear determination unit 330 reaches a predetermined value (for example, the degree of wear of the target 150: 30%). Then, a notification is sent to the information communication terminal 4 to prompt the exchange or rotation of the target 150 (replacement of the X-ray tube head in the case of the sealed type).
- a predetermined value for example, the degree of wear of the target 150: 30%.
- the presentation unit 360 has a display, and presents the file 324 on the display.
- the X-ray tube operation state acquisition device 3 can operate the target 1
- the deterioration of 50 can be accurately detected.
- maintenance personnel can detect the cause of failure of X-ray tube 1 (deterioration of target 150) without any labor. can do.
- the information communication terminal 4 receives the notification transmitted by the notification unit 350, and replaces the target 150 with the user before the target 150 is damaged without any maintenance labor. Or, rotation (replacement of the X-ray tube head in the case of the sealed type) can be prompted.
- the maintenance staff can obtain information on the usage state of the X-ray tube 1.
- the fifth operation of the X, ray tube operation state acquisition system of the first embodiment (operation in which the wear degree determination unit 330 determines the wear degree of the target 150 based on the X-ray intensity) explain the effects and their effects.
- the measuring unit 220 (X-ray monitor 222) measures the intensity (X, dose) of X-rays during warm-up.
- Memory 230 Stores the X-ray dose, tube voltage value, and tube current value measured by the measuring unit 220. The X-ray dose, the tube voltage value, and the tube current value stored in the memory 230 are transmitted when the operation of the X-ray tube 1 is completed.
- the storage unit 320 stores the operation information.
- FIG. 7 is a diagram showing the contents of the file 325 relating to the correspondence between the tube voltage value of the X-ray tube 1 ⁇ tube current value and the X-ray dose (initial value) previously stored in the storage unit 320.
- the fire 325 is composed of a tube voltage value field, a tube current field, and an X-ray dose field.
- the X-ray dose field the initial value of the X-ray dose for the corresponding tube voltage and tube current is described.
- the wear level determination unit 330 extracts the X-ray dose (initial value) at the tube voltage value and the tube current value of the operation information with reference to the file 325 and compares it with the X-ray amount of the operation information. In addition, determine the degree of wear of the target 150 (the rate of decrease from the initial value of the X-ray dose (X-ray dose when the target 150 is used for the first time) at the specified tube voltage and tube current).
- the notification unit 350 is provided when the degree of wear of the target 150 determined by the degree of wear determination unit 330 reaches a predetermined value (for example, the degree of wear of the target 150: 30%). Then, a notification is sent to the information communication terminal 4 to prompt the exchange or rotation of the target 150 (replacement of the X-ray tube head in the case of the sealed type).
- a predetermined value for example, the degree of wear of the target 150: 30%.
- the presentation unit 360 includes a display, and presents operation information on the display.
- the X-ray tube operation state acquisition device 3 compares the X-ray dose (initial value) at the tube voltage value-tube current value of the operation information with the X-ray amount of the operation information to determine the deterioration of the target 150. Can be detected.
- the maintenance staff can detect the cause of the failure of the X-ray tube 1 (deterioration of the target 150) without any labor.
- the information communication terminal 4 receives the notification transmitted by the notification unit 350, it is possible for the user to replace or rotate the target before the target 150 is damaged without the need for maintenance personnel.
- the maintenance staff can obtain information on the usage state of the X-ray tube 1.
- the sixth operation of the X-ray tube operation state acquisition system of the first embodiment the abnormal operation detection unit 340 detects the discharge phenomenon in the X-ray tube 1 based on the X-ray intensity) Operation
- the sixth operation of the X-ray tube operation state acquisition system of the first embodiment the abnormal operation detection unit 340 detects the discharge phenomenon in the X-ray tube 1 based on the X-ray intensity
- the measurement unit 2 20 (X-ray monitor 2 2 1)
- Memory 230 Stores the X-ray dose measured by the measuring unit 220 and the set tube voltage and tube current. The X-ray dose, the tube voltage value and the tube current value stored in the memory 230 are transmitted to the X-ray tube operation state acquisition device 3 by the communication unit 210 at one-second intervals.
- FIG. 8 is a diagram showing the contents of 326 regarding the tube voltage value, the tube current value, and the X-ray dose included in the operation information.
- file 326 consists of a tube voltage value field, a tube current value field, and an X-ray dose field. The operation information is described in the corresponding fields.
- the abnormal motion detection unit 340 calculates the reduction rate of the X-ray dose per second with reference to the file 326.
- the abnormal operation detecting section 340 detects a discharge phenomenon in the X-ray tube 1 when the rate of decrease of the X-ray dose at a constant tube voltage value and a constant tube current value exceeds a predetermined value.
- the notification unit 350 sends a warning to the information communication terminal 4 that a discharge phenomenon has occurred, when the abnormal operation detection unit 340 detects a discharge phenomenon in the X-ray tube 1.
- the presentation unit 360 has a display, and presents the file 326 on the display.
- the X-ray tube operating state acquisition device 3 can detect the discharge phenomenon in the X-ray tube 1 because the X-ray dose changes abruptly at a constant tube voltage value and a constant tube current value.
- maintenance personnel can detect the cause of the failure of the X-ray tube 1 (occurrence of a discharge phenomenon) without any labor.
- the information communication terminal 4 receives the warning transmitted by the notification unit 350, the control system or the target 150 of the X-ray tube 1 is damaged by the discharge phenomenon without any maintenance staff's labor. Before that, the user can be warned of the occurrence of the discharge phenomenon.
- maintenance personnel can obtain information on the usage status of the X-ray tube 1.
- FIG. 9 is a diagram illustrating a functional configuration of the X-ray tube operation state acquisition system according to the second embodiment.
- the configurations of the X-ray tube and the X-ray tube operation status acquisition device 3 are the same as in the first embodiment. The same. However, in the second embodiment, the tube voltage value and the tube current value of the X-ray tube 1 are fixed.
- the operation history (operation information) is stored in the memory 230.
- the notebook computer 5 is connected to the X-ray tube controller 2 and the notebook computer 5 takes in the operation history stored in the memory 230. After that, the maintenance person connects the notebook computer 5 to the communication line and transfers the operation history to the X-ray tube operation state acquisition device 3.
- the operation history includes information on filament energizing time, X-ray irradiation time, G1 voltage value change, and X-ray dose change.
- FIG. 10A is a graph showing the filament energizing time.
- FIG. 10B is a graph showing the X-ray irradiation time.
- FIG. 10C is a graph showing a change in the G1 voltage value.
- Figure 10D is a graph showing the change in X-ray dose (X-ray intensity).
- Fig. 10A-D the first operation of X-ray tube 1 started after the previous operation history was collected at 0:00 on April 1, 2003, and An example in which the current operation history is collected at 12:00 on May 3, 2013 is shown.
- the consumption degree determination unit 330 determines the consumption degree of the filament 110 from the filament energization time included in the operation history by the same operation as in the first embodiment. Further, the wear degree determining unit 330 determines that the life of the filament 110 has come by comparing the latest G1 voltage value with the threshold value Vth [V]. In Fig. 10D, the X-ray dose is maintained at or above the threshold Xth, but in Fig. 10C, since the latest G1 voltage value is higher than the threshold-1 Vth [V], filament 1 It is judged that the life of 10 has come.
- the wear degree determination unit 330 determines the wear degree of the target 150 from the X-ray irradiation time included in the operation history by the same operation as in the first embodiment. In addition, the consumption level determination unit 330 determines that the life of the target 150 has come when the latest X-ray dose falls below the threshold Xth.
- the result of the determination made by the wear degree determination unit 330 is transmitted to the notebook computer 5 via the communication line.
- the maintenance person is based on the judgment result sent to the notebook computer 5 To notify the user of the state of the X-ray tube 1.
- the X-ray tube controller includes a wear degree determining unit, and the wear degree determining unit determines the wear degree of the filament and the target and the occurrence of a discharge phenomenon from the operation history stored in the memory.
- a wear degree determining unit determines the wear degree of the filament and the target and the occurrence of a discharge phenomenon from the operation history stored in the memory.
- the X-ray tube operation state acquisition device and the X-ray tube operation state acquisition method of the present invention can be applied to, for example, control of a medical X-ray generator.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03720951A EP1528845A1 (en) | 2002-04-24 | 2003-04-24 | X-ray tube operation status acquiring unit, x-ray tube operation status acquiring system and x-ray tube operation status acquiring method |
JP2004501945A JPWO2003092336A1 (ja) | 2002-04-24 | 2003-04-24 | X線管動作状態取得装置、x線管動作状態取得システム及びx線管動作状態取得方法 |
AU2003235115A AU2003235115A1 (en) | 2002-04-24 | 2003-04-24 | X-ray tube operating state acquiring device, x-ray tube operating sate acquiring system, and x-ray tube operating state acquiring method |
US10/512,434 US20060008053A1 (en) | 2002-04-24 | 2003-04-24 | X-ray tube operating state acquiring device, x-ray tube operating state acquiring system, and x-ray tube operating state acquiring method |
KR10-2004-7016865A KR20040102366A (ko) | 2002-04-24 | 2003-04-24 | X선관 동작 상태 취득 장치, x선관 동작 상태 취득시스템 및 x선관 동작 상태 취득 방법 |
Applications Claiming Priority (2)
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JP2002122917 | 2002-04-24 | ||
JP2002-122917 | 2002-04-24 |
Publications (1)
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WO2003092336A1 true WO2003092336A1 (fr) | 2003-11-06 |
Family
ID=29267470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/005249 WO2003092336A1 (fr) | 2002-04-24 | 2003-04-24 | Dispositif, systeme et procede d'acquisition d'etat de fonctionnement d'un tube a rayons x |
Country Status (8)
Country | Link |
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US (1) | US20060008053A1 (ja) |
EP (1) | EP1528845A1 (ja) |
JP (1) | JPWO2003092336A1 (ja) |
KR (1) | KR20040102366A (ja) |
CN (1) | CN100345465C (ja) |
AU (1) | AU2003235115A1 (ja) |
TW (1) | TW200308185A (ja) |
WO (1) | WO2003092336A1 (ja) |
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JP2018206677A (ja) * | 2017-06-07 | 2018-12-27 | 浜松ホトニクス株式会社 | X線発生装置 |
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Also Published As
Publication number | Publication date |
---|---|
CN100345465C (zh) | 2007-10-24 |
JPWO2003092336A1 (ja) | 2005-09-08 |
US20060008053A1 (en) | 2006-01-12 |
TW200308185A (en) | 2003-12-16 |
AU2003235115A1 (en) | 2003-11-10 |
EP1528845A1 (en) | 2005-05-04 |
CN1647588A (zh) | 2005-07-27 |
KR20040102366A (ko) | 2004-12-04 |
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